journal article·2021-11-09Open access

Microstructure and Oxidation Behavior of Nb-Si-Based Alloys for Ultrahigh Temperature Applications: A Comprehensive Review

Fuqiang Shen, Yingyi Zhang, Laihao Yu, Tao Fu, Jie Wang, Hong Wang, Kunkun Cui

Coatings· Volume 11· Issue 11

Abstract

Nb-Si-based superalloys are considered as the most promising high-temperature structural material to replace the Ni-based superalloys. Unfortunately, the poor oxidation resistance is still a major obstacle to the application of Nb-Si-based alloys. Alloying is a promising method to overcome this problem. In this work, the effects of Hf, Cr, Zr, B, and V on the oxidation resistance of Nb-Si-based superalloys were discussed. Furthermore, the microstructure, phase composition, and oxidation characteristics of Nb-Si series alloys were analyzed. The oxidation reaction and failure mechanism of Nb-Si-based alloys were summarized. The significance of this work is to provide some references for further research on high-temperature niobium alloys.
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Research context

OpenAlex topics: Intermetallics and Advanced Alloy Properties · Semiconductor materials and interfaces · Advanced Materials Characterization Techniques

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Metallurgical Engineering, Anhui University of Technology, Maanshan 243002, China

Beijing Metallurgical Equipment Research Design Institute Co. Ltd., Beijing 100029, China

Funding

Zhang Yingyi · National Natural Science Foundation of China

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